Description

Postdoc in modeling of high-performance magnetic assemblies for creating strong magnetic fields

At DTU Energy we are looking for a postdoc to work on modeling and designing a permanent magnet assembly that can create a strong homogeneous magnetic field, to be used within a magnetic refrigeration device based on a novel concept.

205 years ago, the founder of the Technical University of Denmark, Prof. H.C. Ørsted, discovered the link between electricity and magnetism. Since Ørsted’s initial discovery, magnets have become omni-present in our daily life, and they are essential in the green transition as the main components in wind turbines and electric motors in e.g. electric cars. Magnets are also a key part in magnetic refrigeration, where they provide the magnetic field that causes a magnetocaloric material to change temperature, an effect that can be used for heating and cooling. However, while permanent magnets generate an everlasting magnetic field at no energy cost, it is not a trivial task to decide how to arrange them in an assembly such that, combined, they create a strong and uniform magnetic field. Understanding exactly how to form such assemblies of permanent magnets is the key goal of this postdoc position.

In this research project, together with several partners across Europe, we will realize a novel type of magnetic refrigeration device. Within this consortium of research groups, the main role of DTU will be researching how to design a novel assembly of permanent magnets that is able to generate a strong magnetic field, while at the same time being easy to manufacture, and cost-efficient. We aim to achieve this by using a novel computational approach that should be computationally efficient at simulating permanent magnet structures, and capable of leading to the globally optimal solution of the underlying design optimization problem. We aim to combine gradient-based approaches, such as topology optimization, with gradient-free methods, such as genetic algorithm, in order to exploit the specific strengths of the two classes of algorithms, and through this reach an ideal magnet design.

Responsibilities and qualifications
For the  modeling project, we are looking for a postdoc to realize computational methods to combine topology optimization methods in Comsol Multiphysics with custom magnet design methods previously published by DTU, with the ultimate goal of finding an optimal magnet design. You will work closely with the research partners in the project to determine design specifications and ensure that the developed magnet is tailored to the refrigeration prototype whose other components will be designed by partner research groups. You will thus have the exciting opportunity of significantly advancing a technology that could be decisive for the green transition, as your magnet design will directly be used to realize the next generation of eco-friendly and energy-efficient magnetic heating/cooling device.

Qualified applicants must have:

• PhD degree in physics, astronomy, engineering, computer science or similar.
• Experience with finite element modeling, ideally Comsol Multiphysics.
• Experience with magnetism, e.g. from a BSc course in electromagnetism.
• Experience with writing and publishing scientific articles.
• Ability to work independently, to plan and carry out complicated tasks. 
• Good communication skills in English, both written and spoken.

As a formal qualification, you must hold a PhD degree (or equivalent). 

We offer
DTU is a leading technical university globally recognized for the excellence of its research, education, innovation and scientific advice. We offer a rewarding and challenging job in an international environment. We strive for academic excellence in an environment characterized by collegial respect and academic freedom tempered by responsibility. 

Salary and terms of employment 
The appointment will be based on the collective agreement with the Danish Confederation of Professional Associations. The allowance will be agreed upon with the relevant union.

The period of employment is 2 years. Starting date is 1 January 2026 or according to mutual agreement.

You can read more about career paths at DTU here.

Further information 
Further information may be obtained from Professor Rasmus Bjørk, +45 46 77 58 95, [email protected] 

You can read more about DTU Energy at www.energy.dtu.dk

If you are applying from abroad, you may find useful information on working in Denmark and at DTU at DTU – Moving to Denmark.

Application procedure 
Your complete online application must be submitted no later than 3 November 2025 (23:59 Danish time). 

Apply at: Postdoc in modeling of high-performance magnetic assemblies for creating strong magnetic fields

Applications must be submitted as one PDF file containing all materials to be given consideration. To apply, please open the link "Apply now", fill out the online application form, and attach all your materials in English in one PDF file. The file must include:

• Application (cover letter)
• CV
• Academic Diplomas (MSc/PhD – in English)
• List of publications 

Applications received after the deadline will not be considered.

All interested candidates irrespective of age, gender, disability, race, religion or ethnic background are encouraged to apply. As DTU works with research in critical technology, which is subject to special rules for security and export control, open-source background checks may be conducted on qualified candidates for the position.

The Department of Energy Conversion and Storage (DTU Energy) focuses on research and development of functional materials, components, and systems for sustainable energy technologies. The technologies include fuel cells, electrolysis, power-to-x, batteries, and carbon capture. The research is based on strong competences on electrochemistry, atomic scale and multi-physics modelling, autonomous materials discovery, materials processing, and structural analyses. We also focus on educating engineering students at all levels, ranging from BSc, MSc, PhD to lifelong learning students. We have about 300 dedicated employees. Read more about us at www.energy.dtu.dk.

Technology for people
DTU develops technology for people. With our international elite research and study programmes, we are helping to create a better world and to solve the global challenges formulated in the UN’s 17 Sustainable Development Goals. Hans Christian Ørsted founded DTU in 1829 with a clear mission to develop and create value using science and engineering to benefit society. That mission lives on today. DTU has 13,500 students and 6,000 employees. We work in an international atmosphere and have an inclusive, evolving, and informal working environment. DTU has campuses in all parts of Denmark and in Greenland, and we collaborate with the best universities around the world.